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dc.contributor.author Lee, Soo-Keun -
dc.contributor.author Mills, Andrew -
dc.contributor.author O'Rourkeb, Christopher -
dc.date.available 2017-09-11T03:33:20Z -
dc.date.created 2017-09-11 -
dc.date.issued 2017 -
dc.identifier.citation Chemical Society Reviews, v.46, no.16, pp.4877 - 4894 -
dc.identifier.issn 0306-0012 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/4407 -
dc.description.abstract Action spectra are an increasingly important part of semiconductor photocatalyst research, and comprise a plot of photonic efficiency, η, versus excitation wavelength, λ. The features and theory behind an ideal photocatalytic system are discussed, and used to identify: (i) the key aspect of an ideal action spectrum, namely: it is a plot of η vs. λ which has the same shape as that of the fraction of radiation absorbed by the semiconductor photocatalyst, f, versus λ and (ii) the key requirement when running an action spectrum, namely, that the initial rate of the photocatalytic process is directly proportional to incident photon flux, ρ, at wavelengths where η > 0. The Pt/TiO2/MeOH system is highlighted as an example of a photosystem that yields an ideal action spectrum. Most photocatalytic systems exhibit non-ideal action spectra, mostly due to one or more of the following: light intensity effects, crystal phase effects, dye-sensitisation, dye photolysis, charge transfer complex, CTC, formation and localized surface plasmon radiation, LSPR, absorption by a deposited noble metal catalyst. Each of these effects is illustrated using examples taken from the literatures and discussed. A suggested typical protocol for recording the action spectrum and absorption/diffuse reflectance spectrum of a photocatalytic system is described. The dangers of using a dye to probe the activity of a photocatalysts are also discussed, and a possible way to avoid this, via reductive photocatalysis, is suggested. © 2017 The Royal Society of Chemistry. -
dc.language English -
dc.publisher Royal Society of Chemistry -
dc.title Action spectra in semiconductor photocatalysis -
dc.type Article -
dc.identifier.doi 10.1039/c7cs00136c -
dc.identifier.wosid 000407635200006 -
dc.identifier.scopusid 2-s2.0-85027398490 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.citation.publicationname Chemical Society Reviews -
dc.contributor.nonIdAuthor Mills, Andrew -
dc.contributor.nonIdAuthor O'Rourkeb, Christopher -
dc.identifier.citationVolume 46 -
dc.identifier.citationNumber 16 -
dc.identifier.citationStartPage 4877 -
dc.identifier.citationEndPage 4894 -
dc.identifier.citationTitle Chemical Society Reviews -
dc.type.journalArticle Review -
dc.description.isOpenAccess N -
dc.contributor.affiliatedAuthor Lee, Soo-Keun -
dc.contributor.affiliatedAuthor Mills, Andrew -
dc.contributor.affiliatedAuthor O'Rourkeb, Christopher -
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